Low energy range dielectronic recombination of Fluorine-like Fe^17+at the CSRm

查看全文 作　　者：Nadir [1,2]Khan;[1]黄忠魁;[1]汶伟强;Sultan [1]Mahmood;[1,2]豆丽君;[3]汪书兴;[3]许鑫;[1]汪寒冰;[4]陈重阳;[1,2]啜晓亚;[1]朱小龙;[1]赵冬梅;[1]冒立军;[1]李杰;[1]殷达钰;[1]杨建成;[1]原有进;[3]朱林繁;[1]马新文 机构地区：[1]Institute of Modern Physics,Chinese Academy of Sciences,Lanznou 730000,China;[2]University of Chinese Academy of Sciences,Beijing 100049,China;[3]Hefei National Laboratory for Physical Sciences at Micro Scale,Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China;[4]Shanghai EBIT Laboratory,Key Laboratory of Nuclear Physics and Ion-beam Application,Institute of Modern Physics Department of Nuclear Science and Technology,Fudan University,Shanghai 200433,China 出　　处：《Chinese Physics C》索引2018年第42卷第6期,共6页 基　　金：Supported by the National Key R&D Program of China(2017YFA0402300);the National Natural Science Foundation of China through(11320101003,U1732133,11611530684);Key Research Program of Frontier Sciences,CAS(QYZDY-SSW-SLH006) 摘　　要：The accuracy of dielectronic recombination(DR) data for astrophysics related ions plays a key role in astrophysical plasma modeling. The absolute DR rate coefficient of Fe^(17+) ions was measured at the main cooler storage ring at the Institute of Modern Physics, Lanzhou, China. The experimental electron-ion collision energy range covers the first Rydberg series up to n= 24 for the DR resonances associated with the ~2 P_(1/2)→~2 P_(3/2)△n =0 core excitations. A theoretical calculation was performed by using FAC code and compared with the measured DR rate coefficient. Overall reasonable agreement was found between the experimental results and calculations.Moreover, the plasma rate coefficient was deduced from the experimental DR rate coefficient and compared with the available results from the literature. At the low energy range, significant discrepancies were found, and the measured resonances challenge state-of-the-art theory at low collision energies. 关 键 词：精力 CSRM FE 天体物理学 离子碰撞 试验性 数据联系 现代物理